All you need is a GIS file in any of the supported formats:
- kml, kmz
- geojson, json, topojson
- shp, dbf, shx, cpg, prj, qix
- mif, mid
- tab, map, id, dat
- gdb, gdbtable, gbdtablx
- tif, geotiff
Notice to SHP: The SHP format requires both files (.shp and .shx) when you are uploading. The .prj and .cpg files are optional. The SHP driver trims attribute names to 11 symbols when you write data. The 11 symbols is max value for attribute name in SHP format.
Shapefile is a multi file format (known as ESRI Shapefile). The main one has the SHP extension. Shapefile is a popular vector geographic file format. Developed and maintained by ESRI for compatibility between Esri products and other programs.
PNG, Portable Network Graphics, refers to a type of raster image file format that use loseless compression. This file format was created as a replacement of Graphics Interchange Format (GIF) and has no copyright limitations.